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How does this calculator work?
Variable meanings:
H_m
– Saved work hours per month
C_h
– Hourly rate (EUR)
S_m
– Other monthly benefit (EUR)
O_m
– Operating costs per month (EUR)
I_0
– Initial investment (EUR)
n
– Evaluation period (months)
l
– Utilization coefficient
r
– Discount rate (annual, %)
Calculation logic:
Net benefit (B_m):
B_m = H_m × C_h + S_m – O_m
ROI:
ROI = ((B_m × n – I_0) / I_0) × 100
Payback period:
I_0 / B_m
NPV:
Discounted sum of net benefit over n months minus investment
IRR:
Internal rate of return (monthly, annualized)
Charts:
Cumulative cash flow:
Shows how the investment pays off over time, including break-even point.
Sensitivity analysis:
Visualizes how ROI changes if key parameters increase or decrease by 20%.
ROI heatmap:
Shows how ROI depends on saved hours and hourly rate.
Automation ROI Calculator
Currency:
$
EUR
Saved work hours per month (H_m)
Specialist hourly rate (C_h)
Other monthly benefit (S_m)
Operating costs per month (O_m)
One-time investment (I_0)
Evaluation period, months (n)
Utilization coefficient (L)
Annual discount rate (r)
FTE
0.00
employees
Net benefit (B_m)
0
EUR/month
ROI
0
%
Payback period
0
months
NPV
0
EUR
IRR
0
% per year
Cumulative cash flow
Sensitivity analysis
ROI heatmap
Cumulative cash flow